Add a vacation to the ever-growing list of stuff that’s getting too expensive.

That’s according to a new survey from Bankrate.com, which found that just 52% of the 2,577 adults surveyed would definitely be vacationing this summer. Of those who said they wouldn’t be, “can’t afford it” was the most-cited reason. About a fifth of those who said they can’t afford it cited their efforts to pay down debt.

That survey data translates to 39 million U.S. adults not taking a vacation this summer due to expense, Bankrate said.

Other leading reasons that respondents cited were “not interested” (23%) and “health/age” (15%).